{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["message topic", "product producer", "cause effect", "content container"], "input": "the scientist synthesizes a copy of the magical red ball by using a few fragments that were left on the grandfather 's hand ."}
{"message topic": [], "product producer": [{"subject": "scientist", "object": "copy"}], "cause effect": [], "content container": []}